Final answer:
The Golden Rule, while a significant ethical guideline, is not a comprehensive normative ethical theory and does not serve as the single principle against which all actions are judged; therefore, the statement is false.
Step-by-step explanation:
The statement that The Golden Rule is an example of a normative theory that establishes a single principle against which we judge all actions would be false. The Golden Rule is a fundamental ethical guideline that essentially suggests treating others as one would like to be treated oneself, and it is taught by many of the world's major religions and philosophies. However, it is not a comprehensive normative ethical theory; rather, it is a guiding principle.
Normative ethics involves creating a system or framework to determine what actions are morally right or wrong, which can include a wide range of principles and rules, not just a single concept. Additionally, theories like Normative Ethical Relativism argue against the existence of universal moral standards, suggesting that moral principles can vary across different societies and cultures, which further demonstrates that the Golden Rule cannot serve as the sole measure of all actions universally.